文献类型： 外文期刊

作者： Zhang, Fuyao ¹ ; Ping, Junai ¹ ; Du, Zhihong ¹ ; Cheng, Qingjun ¹ ; Huang, Yinghua ² ;

作者机构： 1.Shanxi Acad Agr Sci, Sorghum Inst, Yuci 030600, Peoples R China

2.ARS, USDA, Plant Sci Res Lab, Stillwater, OK 74075 USA

3.Oklahoma State Univ, Dept Bot, Stillwater, OK 74078 USA

关键词： head smut;host-pathogen interaction;physiological race;plant disease resistance;Sorghum bicolor

期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.789； 五年影响因子：1.574 ）

ISSN： 0931-1785

年卷期： 2011 年 159 卷 5 期

页码：

收录情况： SCI

摘要： Sporisorium reilianum is the causal agent of head smut on sorghum and maize. In order to effectively utilize host resistance to control this important disease in crops, it is necessary to monitor changes in disease dynamics and virulence of the pathogen. An outbreak of head smut was recently observed in a sorghum field, near Gaoping, Shanxi, China, and research was undertaken to characterize a putative new race of S. reilianum. A set of differential sorghum lines with resistance to several conventional races was used to characterize the newly collected isolate of S. reilianum. The reactions of differential cultivars/germplasm lines to the new isolate indicate that it is a new physiological race of S. reilianum. The new race is highly virulent on sorghum line A(2)V4 and its hybrid, Jinza 12, that are known as resistant to all existing Chinese races of S. reilianum, including races 1, 2, and 3. The new isolate of S. reilianum is different from all of the described races of the pathogen; thus, it is designated as race 4 of S. reilianum. Furthermore, a collection of 34 sorghum genotypes including commercial cultivars and germplasm lines was evaluated for disease reaction to the newly described race and the three known races of the pathogen.